Chimney-cowl



(N M d 1.)

0 8 N. GLIFFORD.

CHIMNEY GOWL.

Patented June 29. 1886 INVENTQR W W I ATTORNEYS.

WITNESSES 46W Warren S'rATns Parana warren.

NEAL CLIFFORD, OF ST. JOSEPH, MISSOURI.

CHIMNEY-cowl...

SPECIFICATION forming part of Letters Patent No. 34 L565, dated June 29,J 886..

Application filed November 20, 1885. Serial No. 183,413.

[lb aZZ whom; it may concern;

Be it known that I, NEAL GLIFFORD, of St. Joseph, in the county ofBuchanan and State of Missouri, have invented a new and usefulImprovement in Ghimney-Oowls, of which the following isaspecification,reference being had to the annexed drawings, forming a part thereof, inwhich-.

Figure 1 is a side elevation. Fig. 2 is a vertical transverse section.Fig. 3 is a detailed view of the step or bearing of the spindle whichsupports the revolving cowl.

Similar letters of reference indicate corresponding parts in all thedifferent figures of the drawings.

My invention relates to cowls attachedto the tops of chimneys forpreventing a downward draft to the chimney, and for increasing theupward draft; and it consists in a frame adapted to the chimney-top, andin the combination therewith of a revolving cowl-shield supported by theframe with its bearings en tirely above the cowl-shield and exterior tothe chimney or smoke-pipe.

To the upper end of the smokechimney or exit-pipe A is secured a conicalcollar, B, to which are attached a number of vertical standards, O,supporting at their upper ends a conical cap, D.

Above the mouth of the chimney A, in the center of the cap D, is secureda tube, E, which projects downward toward the chimney-top A, axially inline with the axis of the chimney.

The tube E consists of a gas-pipe secured to the cap D by nuts turned onthe threaded end thereof above and below the cap, as shown in thedrawings.

Between the upper nut on the pipe and apex of the cap D is secured acircular plate, a.

The pipe E forms the bearing of the spindle F, which extends below thelower end of the pipe E, and is secured to the cowlshield G, The upperend of the spindle F carries a cylindrical cap, 7), which shuts downover the plate a, and receives between it and the plate one or moreballs, 0, which support the cap I), the spindle F, and parts attachedthereto.

The cowl-shield G consists of a metal plate,

(No model.)

in the present case of elliptical form, which is secured in an inclinedposition on the spindle F by nuts (I and beveled pieces e.

To the under surface of the cowl-shield G, at or near the lower edgethereof, is secured a curved aperturcd flange, H, which projects downover the edge of the chimney-top A.

The upper end of the spindle F carries an arm, I, to which is secured avane, J, which is above the highest part of the cowl-shield G, and uponthe same side of the spindle as the 'highest portion of the cowl-shieldG. With this construction the wind blowing across the chimney-topdirects the cowl-shield G, so that the open side of the cowl'is in thedirection of the wind, and the wind blowing over the top of thecowl-shield will produce a partial vacuum under the cowl'shield and inthe chimney-top, thereby increasing the upward draft of the chimney.

The cowl-shield is shifted with the wind by means of the vane J, so thatthe wind is always prevented from blowing down the chimney.

Theball c, )laced between the cap I) and the plate a, forms africtionless bearing for the spindle F, which requires no lubrication.

It will be observed that by the construction which I have described Ihave entirely removed the bearings of the vane and cowlshield from thechimney, so that they are not subjected to the action of the acidscontained by the smoke escaping from the chimney. This arrangementinsures the free movement of the Vane. It also renders thebearingsurfaces very durable.

The aperture of the flange H allows a jet of air to pass under thecowl-shield to increase the draft of the chimney.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

the tube E, supported over the center of the collar by the cap, thespindle F, journaled in the tube E, the inclined cowl-shield G, at

tached to the lower end of the spindle, and lied thereby, the circularcap I), secured to the vane J, secured to the upper end of the thespindle, and one or more balls, 0, placed IO spindle, substantially asherein specified. between the cap I) and plate a, substantially 2. In achimney-cowl, the combination of as herein specified. 5 the frame formedof the collar B, standards NEAL CLIFFORD.

O, and cap D, the tube E, supported by the Vitnesses: cap D, thecircular plate a, secured to the cap F. I. HARTLEY, D, the spindle F,and cowl G and vane J, car- GEO. G. MILLER.

